“Connor was playing baseball and he was up to bat, and kept hitting the ball foul but stayed with it, and kept fighting for the hit, and got it, to win the game,” Cosgrove said.

She says Connor’s coach mailed him the garment when he heard about his cancer diagnosis.

“And he kind of took that and did an analogy to fighting through when you’re back is against the wall, and adversity strikes,” she said. “He took the comparison to that game and how Connor will fight this the same way he fought for the hit.”

Connor told his coach that on the day of his final treatment, he planned to walk out of the hospital, wearing the lucky shirt.